*{
	margin: 0;
	padding: 0;
}
a{
	text-decoration: none;
}
ul,ol{
	list-style: none;
}
.l{
	float: left;
}
.r{
	float: right;
}
/*清除浮动*/
.clearfix:after{
	content: "";
	display: block;
	clear: both;
}
/*文字居中*/
.tc{
	text-align: center;
}
.text-color{
	color: #ddd;
}